FKIE_CVE-2022-50870

Vulnerability from fkie_nvd - Published: 2025-12-30 13:16 - Updated: 2026-06-17 05:24
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: powerpc/rtas: avoid device tree lookups in rtas_os_term() rtas_os_term() is called during panic. Its behavior depends on a couple of conditions in the /rtas node of the device tree, the traversal of which entails locking and local IRQ state changes. If the kernel panics while devtree_lock is held, rtas_os_term() as currently written could hang. Instead of discovering the relevant characteristics at panic time, cache them in file-static variables at boot. Note the lookup for "ibm,extended-os-term" is converted to of_property_read_bool() since it is a boolean property, not an RTAS function token. [mpe: Incorporate suggested change from Nick]
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/06a07fbb32b3a23eec20a42b1e64474da0a3b33e
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/464d10e8d797454e16a173ef1292a446b2adf21c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/698e682c849e356fb47a8be47ca8baa817cf31e0
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/c2fa91abf22a705cf02f886cd99cff41f4ceda60
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/d8939315b7342860df143afe0adda6212cdd3193
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/e23822c7381c59d9e42e65771b6e17c71ed30ea7
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ed2213bfb192ab51f09f12e9b49b5d482c6493f3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/f2167f10fcca68ab9ae3f8d94d2c704c5541ac69
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/kernel/rtas.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "e23822c7381c59d9e42e65771b6e17c71ed30ea7",
              "status": "affected",
              "version": "088186ded490ced80758200cf8f906ed741df306",
              "versionType": "git"
            },
            {
              "lessThan": "06a07fbb32b3a23eec20a42b1e64474da0a3b33e",
              "status": "affected",
              "version": "088186ded490ced80758200cf8f906ed741df306",
              "versionType": "git"
            },
            {
              "lessThan": "c2fa91abf22a705cf02f886cd99cff41f4ceda60",
              "status": "affected",
              "version": "088186ded490ced80758200cf8f906ed741df306",
              "versionType": "git"
            },
            {
              "lessThan": "f2167f10fcca68ab9ae3f8d94d2c704c5541ac69",
              "status": "affected",
              "version": "088186ded490ced80758200cf8f906ed741df306",
              "versionType": "git"
            },
            {
              "lessThan": "d8939315b7342860df143afe0adda6212cdd3193",
              "status": "affected",
              "version": "088186ded490ced80758200cf8f906ed741df306",
              "versionType": "git"
            },
            {
              "lessThan": "698e682c849e356fb47a8be47ca8baa817cf31e0",
              "status": "affected",
              "version": "088186ded490ced80758200cf8f906ed741df306",
              "versionType": "git"
            },
            {
              "lessThan": "464d10e8d797454e16a173ef1292a446b2adf21c",
              "status": "affected",
              "version": "088186ded490ced80758200cf8f906ed741df306",
              "versionType": "git"
            },
            {
              "lessThan": "ed2213bfb192ab51f09f12e9b49b5d482c6493f3",
              "status": "affected",
              "version": "088186ded490ced80758200cf8f906ed741df306",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "arch/powerpc/kernel/rtas.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.16"
            },
            {
              "lessThan": "2.6.16",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.14.*",
              "status": "unaffected",
              "version": "4.14.303",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "4.19.*",
              "status": "unaffected",
              "version": "4.19.270",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.4.*",
              "status": "unaffected",
              "version": "5.4.229",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.163",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.87",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.0.*",
              "status": "unaffected",
              "version": "6.0.17",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.3",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\npowerpc/rtas: avoid device tree lookups in rtas_os_term()\n\nrtas_os_term() is called during panic. Its behavior depends on a couple\nof conditions in the /rtas node of the device tree, the traversal of\nwhich entails locking and local IRQ state changes. If the kernel panics\nwhile devtree_lock is held, rtas_os_term() as currently written could\nhang.\n\nInstead of discovering the relevant characteristics at panic time,\ncache them in file-static variables at boot. Note the lookup for\n\"ibm,extended-os-term\" is converted to of_property_read_bool() since it\nis a boolean property, not an RTAS function token.\n\n[mpe: Incorporate suggested change from Nick]"
    }
  ],
  "id": "CVE-2022-50870",
  "lastModified": "2026-06-17T05:24:19.637",
  "metrics": {},
  "published": "2025-12-30T13:16:01.887",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/06a07fbb32b3a23eec20a42b1e64474da0a3b33e"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/464d10e8d797454e16a173ef1292a446b2adf21c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/698e682c849e356fb47a8be47ca8baa817cf31e0"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/c2fa91abf22a705cf02f886cd99cff41f4ceda60"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/d8939315b7342860df143afe0adda6212cdd3193"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e23822c7381c59d9e42e65771b6e17c71ed30ea7"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ed2213bfb192ab51f09f12e9b49b5d482c6493f3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/f2167f10fcca68ab9ae3f8d94d2c704c5541ac69"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Deferred"
}



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